Cool game mate, worked fine on my mobile =)
5-starred, the gfx are good.
You should check out a game called "Cogs", the idea is the same but the puzzles are more intricate.
What did you think of libgdx? Did it make developing easier?

Hi all,
we recently released a new simple game : Tic Tac Toe Duel (Online)

Features:
- Play against Android
- Play against a friend on the same device
- Play against a friend or a random player online.
- XP level of the player based on the previous win/lose matchs online.
- Leaderboard and Achievements.